#include <gtk/gtk.h>
void show_Dec_window()
{
    gtk_button_set_label(GTK_BUTTON(button1), "pi"); //按钮pi显示
    gtk_widget_show(button1);
    gtk_button_set_label(GTK_BUTTON(button2), "sin"); //按钮sin显示
    gtk_widget_show(button2);
    gtk_button_set_label(GTK_BUTTON(button3), "cos"); //按钮cos显示
    gtk_widget_show(button3);
    gtk_button_set_label(GTK_BUTTON(button4), "tan"); //按钮tan显示
    gtk_widget_show(button4);
    gtk_button_set_label(GTK_BUTTON(button6), "Exp"); //按钮Exp显示
    gtk_widget_show(button6);
    gtk_button_set_label(GTK_BUTTON(button14), "7"); //按钮7需要显示
    gtk_widget_show(button14);
    gtk_button_set_label(GTK_BUTTON(button15), "4"); //按钮4需要显示
    gtk_widget_show(button15);
    gtk_button_set_label(GTK_BUTTON(button18), " "); //按钮A显示空
    gtk_widget_show(button18);
    gtk_button_set_label(GTK_BUTTON(button19), "8"); //按钮8需要显示
    gtk_widget_show(button19);
    gtk_button_set_label(GTK_BUTTON(button20), "5"); //按钮5需要显示
    gtk_widget_show(button20);
    gtk_button_set_label(GTK_BUTTON(button21), "2"); //按钮2需要显示
    gtk_widget_show(button21);
    gtk_button_set_label(GTK_BUTTON(button23), " "); //按钮B显示空
    gtk_widget_show(button23);
    gtk_button_set_label(GTK_BUTTON(button24), "9"); //按钮9需要显示
    gtk_widget_show(button24);
    gtk_button_set_label(GTK_BUTTON(button25), "6"); //按钮6需要显示
    gtk_widget_show(button25);
    gtk_button_set_label(GTK_BUTTON(button26), "3"); //按钮3需要显示
    gtk_widget_show(button26);
    gtk_button_set_label(GTK_BUTTON(button28), " "); //按钮C显示空
    gtk_widget_show(button28);
    gtk_button_set_label(GTK_BUTTON(button33), " "); //按钮D显示空
    gtk_widget_show(button33);
    gtk_button_set_label(GTK_BUTTON(button38), " "); //按钮E显示空
    gtk_widget_show(button38);
    gtk_button_set_label(GTK_BUTTON(button42), " "); //按钮F显示空
    gtk_widget_show(button42);
}